Anchor boom assembly



F. c. GOOD ANCHOR BOOM ASSEMBLY Jan. 27, 1959 2 Sheets-Sheet 1 Filed May16, 1957 INVENTOR. FredC.Good. BY

Attorneys Jan. 27, 1959 v F. (2-. GOOD 2,870,732

' ANCHOR BOOM ASSEMBLY v Filedllay 16, 1957 2 Sh'ets-Shet 2 Fie. 5

IN V EN TOR.

I Fr edC.Good

.Aii-orneys United States ANCHOR BOOM ASSEMBLY Application May 16, 1951,Serial No. 659,625

6 Claims. (Cl. 114-210) This invention relates to anchor booms and moreparticularly to anchor handling devices of the type which areparticularly adapted to use on pleasure craft. While the principles ofthe invention herein disclosed are applicable to almost any size boat orship, the invention was primarily developed for pleasure craft in the 20to 50 ft. class.

It is always a problem in the handling of small boats to either lower orraise the inchor in rough seas. Many accidents have taken place due topersons trying to maintain their balance on the wet forward deck of asmall boat while either taking in or lowering an anchor. Ac

cordingly, it is an object of the present invention to provide a meansfor lowering and raising an anchor from the cockpit of the boat.

It is .a further object of the present invention to provide an anchorboom supporting means pivotally mounted to the deck in such way that theanchor will always clear the sides of the boat during the raising andlowering operations.

It is a further object of the present invention to provide an anchorboom which is pivoted in both the horizontal and vertical planes inorder that the boom may follow movements of the anchor and line, and mayalso be swung inboard in order to secure the anchor on the deck.

Other objects and advantages of the present invention will becomeapparent from the following detailed specification read in connectionwith the attached sheets of drawings, in which:

Fig. l is a top plan view of the boom;

Fig. 2 is a side elevation of the boom mounted on the forward deck of aboat;

Figure 3 is a sectional view taken on the lines 3-3 of Fig. 2;

Fig. 4 is an enlarged top plan view of the rear end of the boom andlatching assembly;

Figs. 5 and 8 are top plan views of two of the plate assemblies used inmounting the boom on the deck;

Fig. 6 is a side elevation showing the boom raising means and furthershowing the boom in its raised position;

And Fig. 7 shows in side elevation the position which the boom is freeto assume during lowering of the anchor.

Referring first to Figs. 1 and 2 of the attached drawings, it will beseen that the boom comprises essentially an upwardly facing. taperedchannel member 10 which is elongated in its general outline and includesa bridge 11 closing the upper rear end of the channel. At the outer endof the boom, there is mounted a roller 12 over which the anchor line 13runs. A stop member for the anchor in the form of a ring member 13A isalso afiixed to the outer end of the boom in any convenient manner. Asshown most clearly in Fig. 2, the means for mounting the boom on thedeck of a boat include a pair of superimposed plates 14 and 15. Thelower of these two plates 14 is fixedly secured to the deck of the boatin any desired manner. As shown in Fig. 2, a pair of bolts, the

atent 2,870,732 Patented Jan. 27, 1959 heads of which are received incountersinks below the upper surface of the plate, are used for thispurpose. The upper plate member 15 is pivotally connected to the lowerplate member adjacent the forward or outboard ends of each. The pivotalconnection may be a simple hinge pin 16, as shown in Fig. 2. The rearend of the boom is pivotally mounted by a pin 17 to a block member 18,as shown most clearly in Figs. 2 and 6. This block member includes adownwardly extending collared bushing 19 also shown in Figs. 2 and 6.The collared portion of this bushing is received in an opening 20 in thelower plate member. The opening 20 is somewhat larger than the diameterof the bushing 19. Likewise, the opening 21 in the upper plate memberthrough which the remainder of this collared bushing 19 extends, is alsolarger than the diameter of the bushing.

By reason of the structure thus far described, it will be apparent thatthe boom 10 and the block member 18 may move as a unit longitudinallywith respect to the upper and lower plate members. The extent of thislinear motion is fixed by the diiference in the size of the openings inthe plate members and the diameter of the bushing. It will also beapparent that the boom and block member may be rotated about a verticalaxis drawn through the center of the collared bushing.

Depending from the lower surface of the boom 10, there is shown in Figs.2 and 6, an L-shaped catch member 22, the purpose of which will now bedescribed.

The front portion of the upper plate member is stepped upwardly, asshown at 23 in Figs. 2, 6, 7 and 8, and extends outwardly beyond thepivot 16. That portion 24 which extends outwardly of the pivot has anopening therein in the form of a transverse slot 25A. The slot isslightly curved, as shown in the top plan view in Fig. 8, and this slotis adapted to receive the catch member 22 which is afiixed to the underside of the boom 10.

The pivoted lever arm 25 shown in Figs. 1, 2, 6 and 7, serves a doublepurpose. First" of all, it serves as an operating means to lock the boomin its position as shown in Fig. 2, and secondly, it serves as anoperating means to raise the boom to the angle shown in Fig. 6, in orderthat the boom may be rotated on its vertical pivot 19 and swung inboard.The lever arm is rigidly connected to a shaft 26 which is journaled inthe block member 18. The journal is cut away intermediate its ends, asshown in Fig. 4, in order that the shaft may have attached thereto a cammember 27. This cam member is also shown in Figs. 2, 4 and 6. Thelowered and locked position of the boom shown in Fig. 2 illustrates howthe cam member engages with a fixed abutment 28 which protrudes upwardlyfrom the upper surface of the upper plate, in order to earn the boomrearwardly of its mounting.

Referring now particularly to Fig. 3, the means for latching the rearend of the boom in a horizontal position is shown. This means is asimple sliding catch 30 which, in its innermost position, as shown inFig. 3, engages with the collar of the bushing member 19. When thislatch member is pulled outwardly, the boom and upper plate are then freeto pivot about the pin 16, so that the boom may assume the positionshown in Fig. 7 or any intermediate position.

The following description of the operation of this apparatus should beclear in view of the foregoing detailed description of the structuralfeatures. Let us assume that the anchor has been raised until it isimmediately adjacent the outer end of the boom abutting thestop ring13A,

and further assume that all parts are in the position shown in Fig. 2.In this position, the boom is rigidly held at its point of forwardcontact with the upper plate member by means of the catch 22 which islocked into the slot 25A. The rear end of the boom may be locked in thisposition by means of the latch member 30, so that the two plate members14 and 15 are also held in engaging position, and the upper plate is notfree to rotate about the pivot 16. It is not necessary under ordinaryconditions, however, to lock the. rear end of the boom with the slidinglatch 39. Tension of the. anchor line 13 is sufficient to hold the, rearend of the. boom down when the anchor is fully raised. For this reason,all raising and lowering of the. anchor can be. done without the.necessity of leavin the. cockpit.

With the boo-m in the position shown in Fig. 2 and with the. anchorfully raised, it is entirely feasible to cruise, as the length of theboom positions the anchor clear of the hull and the boom will not bouncedue to motion of the seas, in view of its forward locking point and theanchor linel tension. If at this point it is desired to swing the anchorinboard for storage purposes, the first step would be to raise the leverto a point which will allow the cam 2.7 to clear the fixed abutment 28,The boom may then be slid forwardly so that the locking portion oftheforward latch 22 will be, positioned to be withdrawn through the slot25A in the upper plate member. Further rotation of the lever 25, to theposition shown in Fig. 6, cams the boom upwardly about its rearhorizontal pivot 17. The boom may then be manually rotated 180, more orless about the vertical axis of the bushing member 14, to position. theanchor above the deck.

. Let us again assume the same starting point with the necessary torelease the anchor line and the length of the boom will insure that theanchor falls clear of the, hull. In, order to raise the anchor, it isonly necessary to retrieve the line. As the anchor line is taken in, theboom will assume a position in which it substantially points to thedirection from which the anchor is being retrieved. Note particularlythat during this operation, the boom remains fixed in longitudinalposition with respect to the upper plate member because the lever 25maintains its relative position with respect to the boom and the cammember 27 therefore remains in engagement with the fixed abutment 28.The boom and upper plate member, however, will be free to pivot aboutthe forward pivot point 16 and further, the boom will have a limitedamount of swinging motion about the axis of the bushing member. Theextent of this swinging movement is limited by the lateral dimension ofthe slot 25A in the forward end of the upper plate member. With the boomin the position shown in Figure 7, therefore, it can swing from side toside in. order that it may follow the anchor on either the port. orstarboard side of the bow as the case may be.

. Another feature of the present invention is that the forward pivot pin16 may be made of a material which willv shear under predeterminedstress, and thus release the entire boom and upper plate assembly. Thisis desirable in the event'that the anchor or anchor line shouldbecomefouled in the wheel. The shearing strength of the pivot pin may beset so that this pin will shear before any damage is done either to theanchor, the Wheel, the line, or the bow of the boat. As the anchor inbeing retrieved clearsthe surface of the water, the boom will begin totilt in a counterclockwise direction, as viewed in Fig. 7, due totension on the anchor line. When the anchor is fully raised, the boomwill be in a horizontal position and held in such position by tension inthe anchor line. The sliding latch 30 may then be pushed inwardly. tolock the assembly in place if desired.

From the foregoing, it will be apparent that there is herein shown andvdescribed a novel and useful anchor boom assembly which can be used togreat advantage on boatsof awide variety of sizes.

While a preferred embodiment has been shown and de-.

scribed, applicant claims the benefit of a full range of equivalentswithin the scope of the appended claims.

I claim:

1. An anchor boom assembly for mounting on the deck of a boat,comprising in combination: An elongated boom member over which theanchor line passes; a base plate member rigidly secured to the deck ofthe boat; an upper plate member overlying said base plate and hingedthereto at the outboard end thereof, the hinge being in the horizontalplane transversely of the boom; meansforming a hinge connectionbetweent-heinboard end's'of said boom and said upper plate member, theaxis of the hinge lying in a horizontalplane transverselyiof theshoom;and means forming a pivotal connection between the rear inboard end ofsaid boom and the upper and lower plate members, the axis of the pivotbeing in the vertical plane; whereby the boom and upper plate may pivotabout a horizontal axis to. substantially parallel the anchor lineduring the lowering and raising. operations,

2. The assembly defined by claim 1, and including means carried by theboom and the lower plate member for releasably locking the upper andlower plate members, to prevent pivotal movement therebetween.

3. The assembly defined by claim 1 including means carried by the boomfor engaging the outboard end of the upper plate for releasably lockingthe boom to thC'Olltn board end of the upper, plate member.

4. The assembly as defined by claim 1 and including cam and levermeanslocated between and carried by the. boom and the upper plate memberfor raising the out board end of the boom by pivoting said. boom aboutthe hinge connection between the inboard end of the boom: and theupperplate member. I

5. An anchor boom assembly for mounting, on: the deck of a boat,comprising in combination: An elongated boom member over which theanchor line passes; abase: plate member rigidly secured to the deck ofthe boat-gen. upper plate member overlying said base plate, hingedthereto at the outboard end thereof with, the hinge in the horizontalplane, said upper plate. including an outboardportion stepped upwardlyand outwardly and having-a slot extending transversely of thesteppedlportiom means.

forming a hinge connection between the inboard ends ;of

said boom and said upper. plate member, the axis. ofithe hinge lying ina horizontal plane transversely of the; boom; means forming, a pivotedconnection: on averticalg axis between the inboard end of said boom. andthe upper: and lower plate members, there being sufii'cient clearancebetween the parts of said, connection to permita limited rectilinearmovement between said vboom.andsaidi upper plate. member; a latch memberdependihgftorn the under surface of the boom to be receivable in theslot ofisaid stepped portion of said, upper plate. member, said latchincluding a hooked portion to lock saidtboomtothesaidi upper platemember whensaidfboom' is moved. rearward-1y with respect thereto; andmeans carriedby the. boom and upper plate member for positively. holdingsaid-.boomain its rearward position so to position the hooked portionofsaid latch member behind said slot and beneath said upper plate member.

6. The combination defined by claim 5 and including means carried by theboom and lower plate member for releasably locking the upper and lowerplate members,.to. prevent pivotal movementtherebetween.

References titted in the file of this patent UNITED- STATES PATENTS2,333,836. Whitney Nov. 9 1943' 2,661,711 Evans Dec. 8 195'5 2,734,475Fyock Feb. 14', 19 56

